Home / 20,914.16-31,366.46-12,483.04

Finding the Fourth Proportional to 20,914.16, 31,366.46 and 12,483.04

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Solution

The fourth proportional to 20,914.16, 31,366.46 and 12,483.04 is: 18,721.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.16 : 31,366.46 = 12,483.04 : x
  2. Step 2: Convert to fraction form
    20,914.16/31,366.46 = 12,483.04/x
  3. Step 3: Cross multiply
    20,914.16x = 31,366.46 × 12,483.04
  4. Step 4: Simplify right side
    20,914.16x = 391,548,774.84
  5. Step 5: Solve for x
    x = 391,548,774.84/20,914.16
  6. Step 6: Final answer
    x = 18,721.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.